''Decanema'' is a small genus in the
dogbane family first described as a genus in 1838. The group is endemic to Madagascar.
[Liede, S. 1996. The Cynanchinae (Asclepiadaceae) in Madagascar: more new leafy and leafless species and subspecies. Bulletin du Muséum National d'Histoire Naturelle, Section B, Adansonia. Botanique Phytochimie 18: 103–135][Descoings, B. 1961. Notes taxinomiques et descriptives sur quelques Asclépiadées Cynanchées (Asclépiadacées) aphylles de Madagascar. Adansonia, n.s. 1: 299–342]
;Species
[The Plant List, ''Decanema'']
/ref>
# '' Decanema bojerianum'' Decne. - Madagascar
# '' Decanema luteifluens'' Jum. & H.Perrier - Madagascar
;formerly included[
*''Decanema grandiflorum'' Jum. & H.Perrier, synonym of '' Cynanchum grandidieri'' Liede & Meve.
]
References
Asclepiadoideae
Apocynaceae genera
Endemic flora of Madagascar
Taxa named by Joseph Decaisne
{{Apocynaceae-stub